This Boundless Informant slide shows the number of phone records collected between 10 December 2012 and 8 January 2013 by NSA’s unidentified corporate partner FAIRVIEW (US-990) – some 6 billion in total: see the book No Place To Hide, 13 May 2014.

This April 2012 NSA presentation uses an AT&T specific term – Common Backbone or CBB – to refer to the Internet backbone of the corporate partner it codenames FAIRVIEW: see the New York Times article AT&T Helped U.S. Spy on Internet on a Vast Scale, 15 August 2015.

A memorandum providing the executive summary of the NSA’s Signals Intelligence Directorate (SID) auditing repoort for the first quarter of 2012: see the Washington Post article NSA broke privacy rules thousands of times per year, audit finds, 16 August 2013.

This undated NSA Special Source Operations presentation describes the agency’s relationship with corporate partner AT&T, codenamed FAIRVIEW: see the New York Times article AT&T Helped U.S. Spy on Internet on a Vast Scale, 15 August 2015.